History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c30.s1.15

c30.s1.15

Powdered iron is to be macerated awhile in the decoction of the three myrobalans, in cow's urine, and then to be mixed up with clarified butter and fried in an earthen vessel and stirred with an iron rod until a blade of straw, thrown over it, catches fire. The iron powder is to be pounded and the above process repeated five times. Or, iron is roasted four times in a covered crucible with the decoction of the myrobalans and is reduced to fine powder. 104-105